Concentrated H2SO4 cannot be used to prepare HBr from NaBr,... | CHEMISTRY - SULPHURIC ACID | SolveeIt | Solveeit

Today, August 18

Question

Concentrated H2SO4 cannot be used to prepare HBr from NaBr, because it ;

A

Reduces HBr

B

Oxidises HBr

C

Disproportionates HBr

D

Reacts slowly with NaBr

Answer

Oxidises HBr

Explanation

Solution

H2SO4 oxidises HBr to Br2

H2SO4 + 2HBr $\longrightarrow$ SO2 + Br2 + 2H2O.